Method of spinning



Jan. 1s, v1921. 14514.87

H. D. coLMAN mon or msnm origina Filed -.my 14. 1920 s sheets-shura [n ven tor @www a2/M72' Jan.' 18,1921., 1,614,81

A H. Dv. COLMAN IETHOD, 0F SPINNING 5, Sheets-Sho s Original Filed July 14. 1920 msnm.

. Inv e111! or 'PeieiftediJ-en. '18,151.57'.l i 1,614,879

e Y nrnon or SPINNING;

I Application nea my 14,1990, semi ne. 396,193. Renewed iugm s, 192e.

In order to facilitate the mechanical findthe cloth. Or the found .end may break in i of the free end of the yarn on a filling the .end-finding operation while being unl(libin or a warp-bobbin, it is desirable to wound beneath the strand connecting the upspin enough coilsof yarn on the upper end Y per and lower coils. 5 of the bobbin to form a small ma or ind- It 1s necessary that the strand extending ing coil above the main yarn mass, which from the front drawing roll tothe traveler coils of yarn may be rasped b a suitable shall be somewhat slack, in order, rinci: device and stripped o the bob in. These pally, to allow the bobbin to be lifte until coils of yarn, of course, are connected by a t e strand extending between thel traveler lc strand of' yarn to the main yarn' mass, and and the bobbin assumes'such an angle that when stripped off the bobbin they are folthe coils on the lower end Aof the bob in will lowed by said strand, the latter constituting slide off. If, however, too muchslack 'yarn the found end. l is spun, there may result excessivel large c Before removing the full bobbins from kinks which may catch on the threa guide l5. the spinning frame, it is desirablel to spin or other. parts and causebreakage'- of the a few -coils of yarn u on the lower end of yarn, or the kinks may be unable to pass .the bobbin in order t at when the bobbin through the traveler or the thread guide and is doled these coils of yarn shall slip off thus cause breakage of the yarn when the onto the spindle and afford means fof attachmachine is again started. ing the yarn to the nevfbobbin. The coils of The method heretofore used in s inning'a yarn upon the` lower end of the bobbin doling coil upon the lower end of t ebobbin are spun after the yarn has been coiled about and in obtaining the necessary slack has the upper end of the bobbln and thus the consisted in lowering the ring rail to theV coils at the upper end of the bobbin are condofling position and then stoppin and re- 25 nected to those at the lower end of the bob`- starting the machine repeatedly an in quick bin by a strand of yarn. If the proper numsuccession by shifting the driving belt off ber of coils have been wound about the lower and onto the drive ulley. When the ring end of the bobbin, they will slip off the bobiail reached the do g osition, some yarn bin and the connecting strand will be broken would be wound around) the lower end of in the doling operation; but, if an excessive the bobbin and during the succeeding operaamount of yarn has been wound about the tion of the machine more or less slack yarn lower `end of the bobbin, some of that yarn -would be spun. In practice, this method of I will remain wound about the lower end of spinning yarn on the lower. end of a bobbin the bobbin when -the bobbin is dofed and, and roviding slack arn did n ot produce satis actory results. e n-restarting the macoils to the lower coils will not be bro en. chine the belt would sometimes be allowed en such a bobbin is laced in a weftto remain u on the drive pulle so long that replenishing loom provided with an endthe speed o the machine wo d increase to finding device for strip ing the upper coils the point where some or all of the slack yarn off the'bobbin, various iiculties ma arise. previously spun would be wound upon the If the surplus lowercoils unwind w en the lower end of the bobbin, thereby placing an uppercoils are stripped olf the bobbin, said excessive amount of yarn on the lower end surplus coils will forni a strand of greatery or of the bobbin and making it necessary to spin less length which trails along with the found more slack arn to take the lace of that which had geen unintentional y wound on it will lreach into the cloth and cause a dethe bobbin. The spinning of slack yarn fecttherein. If the strandconnecting the might also continue until excessively larlge upper and lower coils should break in the kinks had formed inthe yarn between t end-finding operation, the yarn remnant on traveler andthe dra rolls. `The method 50 the lower portion of the` bobbin will either just described for putting the machine in break the weft thread or become woven into condition for doing not only was unsatis- 10 proper 35' ed in the ladderrails '5 tion cooperates with .`to 'produce the'upward and downwar move' l y 18 that bears against a filling cam 19 factory in results, but also was laborious and required some skill and considerable attention on the art of the operator.

The object o this invention is to provide a simple and cpiivenient method of operatin the spinning machine to produce a smal yarn mass upon the upperend of the bobbin. to wind the correct amount of yarn upon the lower end of the' bobbin, and to spin the amount of slack yarn. In the accompanying drawings, Figure 1 is a fragmental sidev elevation of a spinning machine l may be practiced. Fig. 2 is a' transverse sec- 15 tionalgview' taken in the plane of line 2-2 of Fig. 1. Fig. 3 is a fragmental transverse sectional view showing more or 'less diagrammatically, the drawin rolls, the thread-board, the bobbin, and t e ring rail. 2 Fig. 4 is a graph showing the type of timespeed cycle obtained according to my inve tion. v

`The creel is not illustrated in the drawings, as the invention has no particular ref'- 25 erence thereto.

The form of spinning machine herein rshown comprises spindles 1, the bases of which are mounted in the upper flanges of n the ladder rails 2. 3 .are the whirls on the "o spindles. 4 are bands extending from'the .'ndrum 5 to the whirls 3. The drum 5 is fixed upon the main shaft 6. The ring rails 7 are connected to the upper ends of 'fting rods 8, the latter being slidably mount` 2. To the lower ends ofthe lifting rods 8 are attached shoes 9 i (Figpl) that rest upon roller studs-10 carried b arms 11, said'arms being located suitab e intervals along the machine. vThe 40 arms 1.1 at opposite ysidesef the machine are arranged in pairs, each pair being fixed upon a rock shaft 12. Rigid with eachqrock shaft is an arm 13, the several arms 13 being connected by eans of a' rod 14 so 45 all of the arms 11 are 'caused to rise and fall simultaneously. A. counterweight Q tached tofeach ofj the rock shafts 12 tends to raise the ringprails.

.A build motion of any v 4the counterwei suitable construchts 15 ment of the ring rails in the normaloperation of the machine. Herein is shown a combination warp and filling builder of well-known character. Said-biiilder comprises a builder arm 16 (Fig. 2) pivoted at 17 to a stationary part of the framework. 0n the builder arm 16.is mounted a' roller which ft 20. -The shaftl 20 is mounted -upon a sha is driven fro the shaft 6 b lmeans of A. thenchange-s d gear' train i ustrated Fig.'1. A p ling'arm 21 is pivoted'toV e builder arm 16 at 22 and lies in Contact wit .a roller stud 23 on. a rack 24- Said ,rack

is slidably mounted on the lbuilder arm-16 to'r'nove toward and away from the axes 17 and 22. The rack 24 meshes with a worm which is rotatably mounted in the builder arm 16, said Worm being intermittently and slowly rotated in the normal operation of the-'spinning machine by well-known means Vsuch as a counterweighted rock lever 24, rocked at the upper endl of each stroke by contact with an adjustable stationary 25, and having a pawl and ratchet with the worm 25, so asto cause the roller stud 23 to move toward the axes 17 and 22. A chain 26 connected to a hook 2x7 on the arm 21 extends over a guide sheave 28 and thence to the adjacent arm 13. The counterweights 15 acting throughthe arms 13 and the chain 26 hold the roller stud 18A against the cam 19.

In the rotation of the filling cam 19 the 85 arms 16 and 21 are swung, thereby causing the ring rails 7 to, rise and fall and thus to lay the yarn on the revolvingy bobbins. s the rack 24 moves toward the axis 22, the arm 21 rises with' relation to the arm 16, q thereby causing the ring rails 7 to rise gradually so 'as to cause the yarninslses on the lengthen in the wellown manbobbins to ner.

When the main arn mass a has been com- 9? pleted, the ring ra1l7 is raised for an instant abgvethe normal u per limit of traverse to spin the-finding coi b, the coil b being connected to the yarn mass a by a strand c, the ring rail bein then quickly lowered below the normal ower limit of traverse .to spin the doliing coil e, the coil e beingv connected to the coil b by a strand d. Accord'- ing to my invention, after the dofiing coil is completed the spindle is further rotated ata speed much below the normal s d f spinning, Vthe s eed beingso lowt at tl'le strand f exten ing from the thread guide to. the traveler 33 does not balloon, but instead lies in contact with the. yarn mass is thus carried at the same speed as' the bobbin without winding any yarn onto the bobbin. This movement is continued only for the short time needed to allow the drawing rolls 34 to deliver a small amount of yarn. Inasmuch as the yarn thus spun is not wound on the bobbin, thestrand f becomes slack, said strand kinking at one -or more points, as indicated at k in Figb3. It is this slack yarn which permits the b--f bin to be lifted, in doing', so that the strand between -the traveler and the dong fcoil e .slopes downward at a rather steep angle before the slackl is taken up. This assures the vunwinding of all or practically all ofthe 125 'doing coil e around the spindle where it will be clamped by putting another bobbin J in position.

F'. 4, I Yhave illustrated graphically at which the is operated 13 dung the fm1 sa llate the practice, 1t"

of the spinning opera'- tion. In the lgrap the vertical height of the curve indicates the speed and the horiof o eration.v During the time marked B the lmding coil b is spun, and similarly the strand d, dollin coil e and slack lc are formed during tige times indicatedby D, E and K, respectively. The shape of the curve during time interval E may obviously vary greatl with the type of machine being operat bein dependent on the inertia of the arts and the braking action, if any, exerte upon them to slow them down. Additional turns will be formed in the doing coil e until the eed drops below the ballooning speed in 'cated b the dotted line, after which slack yarn wil begin to accumu- Any suitable means may b e employed for tinishin the Spinnin operation as above outlinef In the mac ine I have disclosed, the ring rails 7 may be Araised to spin the finding coil by rotating the worm 25 -by means of the handle above the main yarn mass a; and may then be lowered to the 'position shown 1n the drawings by stepping on the usual treadle (not shown toforce them into the final position in w A'ch position the 1 are retained byv the usual latch not s own). After reaching this position t e doiling coil is spun and the source of power is disconnected from the machine.

In order to spin the slack .yarn necessary to insure the proper functioning of the doi'- ing coil, the drum 5 should be rotated to drive the machine at a speed below that at which the strand f balloons. For this urpose I have illustrated a handle- 38 wiiich may be used torotate the shaft 6 slowly and spin the desired amount of slack arn. YThe slack yarn may, and generally w` l, form one or more lc, as i ustrated in Fig. 3, but the amount of sla'ck required is not enough so that the kink will fail to straighten out when the bobbin is doied.

vWhen the machine, 4is repeatedly started and stopped by wer as has heretofore been beenpalmost out of the question togobtainv dollng coils and lslack of 36 to a'llow them to rise'-A vprises 4the step of forming t .of spinning a dolling even approximate uniformity, the results obtained almost a matter of accident as .far as this part Qf the'work was concerned. zontal displacement vcorresponds to the time bring them .uickly to rest. Automatic means might a o be rovided for performing the o eration of riving Vthe machine at low speeg to form the proper amount of slack, and'other alternatives and variations will naturally occur to those skilled in the art. My invention, therefore, should not be construed as'lin'n'ted to the disclosure, but

as defined in the subjoined claims.

I claim as my invention: 1. The method of'spinnin which come main yarn mass, the step-of spinning a small finding `coil' above the main yarn mass, the step of laying astrand from the iindingcoil to the lower end of the main yarn mass, the step coil adjacent to the lower end of the mam yarn mass, and the step of drivin the machine at a controlled speed below'tat loons t'o produce sla'ck arn.

2. The method of spmning which" comprises the step of completing the spinning operationproper and the step of subse uently; olperating the machine constantly low t e allooning speed to vspin slack yarn.

3. The method of spinning which comprises the step o`f com leting the spinning operation proper inclu g the formation of a'doing coil, and the step of operating the machine below the ballooning speed for a definite number of revolutie In testimony whereof, I ha've` hereunto set -m hand.

y HOWARD D.

at which the Athread bal- 

